A:
Positive:
1 x 108050155 x 216100313 x 83115519 x 56868565 x 16623195 x 113737169 x 63935247 x 43745673 x 16055845 x 127871235 x 87493211 x 3365
Negative:
-1 x -10805015-5 x -2161003-13 x -831155-19 x -568685-65 x -166231-95 x -113737-169 x -63935-247 x -43745-673 x -16055-845 x -12787-1235 x -8749-3211 x -3365
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 10,805,015, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 10,805,015 | |
| -1 | -10,805,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 10,805,015.
Example:
1 x 10,805,015 = 10,805,015
and
-1 x -10,805,015 = 10,805,015
Notice both answers equal 10,805,015
With that explanation out of the way, let's continue. Next, we take the number 10,805,015 and divide it by 2:
10,805,015 ÷ 2 = 5,402,507.5
If the quotient is a whole number, then 2 and 5,402,507.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 10,805,015 | |
| -1 | -10,805,015 |
Now, we try dividing 10,805,015 by 3:
10,805,015 ÷ 3 = 3,601,671.6667
If the quotient is a whole number, then 3 and 3,601,671.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 10,805,015 | |
| -1 | -10,805,015 |
Let's try dividing by 4:
10,805,015 ÷ 4 = 2,701,253.75
If the quotient is a whole number, then 4 and 2,701,253.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 10,805,015 | |
| -1 | 10,805,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 19 | 65 | 95 | 169 | 247 | 673 | 845 | 1,235 | 3,211 | 3,365 | 8,749 | 12,787 | 16,055 | 43,745 | 63,935 | 113,737 | 166,231 | 568,685 | 831,155 | 2,161,003 | 10,805,015 |
| -1 | -5 | -13 | -19 | -65 | -95 | -169 | -247 | -673 | -845 | -1,235 | -3,211 | -3,365 | -8,749 | -12,787 | -16,055 | -43,745 | -63,935 | -113,737 | -166,231 | -568,685 | -831,155 | -2,161,003 | -10,805,015 |
Here are some more numbers to try:
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